fix(metadata): use audible.de api for german audiobooks

wordarr/metadata/audible.py

@@ -1,22 +1,43 @@
+import asyncio
+import os
+
 import httpx
 
 from .base import MetadataResult
 
+# Comma-separated marketplace TLDs, first entries rank first in the results.
+REGIONS = [r.strip() for r in os.environ.get("WORDARR_AUDIBLE_REGIONS", "de,com").split(",")]
 
-async def search(query: str) -> list[MetadataResult]:
+
+async def _search_region(client: httpx.AsyncClient, tld: str, query: str) -> list[dict]:
     params = {
         "keywords": query,
         "num_results": 10,
         "response_groups": "media,contributors,product_desc,product_attrs",
         "products_sort_by": "Relevance",
     }
-    async with httpx.AsyncClient(timeout=15) as client:
-        resp = await client.get("https://api.audible.com/1.0/catalog/products", params=params)
+    try:
+        resp = await client.get(f"https://api.audible.{tld}/1.0/catalog/products", params=params)
         resp.raise_for_status()
-        products = resp.json().get("products", [])
+        return resp.json().get("products", [])
+    except httpx.HTTPError:
+        return []
+
+
+async def search(query: str) -> list[MetadataResult]:
+    async with httpx.AsyncClient(timeout=15) as client:
+        region_results = await asyncio.gather(
+            *(_search_region(client, tld, query) for tld in REGIONS)
+        )
 
     results = []
+    seen_asins = set()
+    for products in region_results:
         for p in products:
+            asin = p.get("asin", "")
+            if asin in seen_asins:
+                continue
+            seen_asins.add(asin)
             images = p.get("product_images") or {}
             release = p.get("release_date") or ""
             results.append(
@@ -24,7 +45,7 @@ async def search(query: str) -> list[MetadataResult]:
                     media_type="audiobook",
                     title=p.get("title", ""),
                     authors=", ".join(a.get("name", "") for a in p.get("authors") or []),
-                external_id=p.get("asin", ""),
+                    external_id=asin,
                     year=int(release[:4]) if release[:4].isdigit() else None,
                     cover_url=next(iter(images.values()), ""),
                 )